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regulator_get_current_limit() can return negative error codes. We saved
the return value in an unsigned "curr", and a subsequent check interpreted
a negative error code as a positive (invalid) current limit.
Save the return code as a signed value, which avoids messages like this,
seen on Samsung Chromebook Plus:
rockchip-pcie f8000000.pcie: invalid power supply
[bhelgaas: changelog]
Fixes: 4816c4c7b82b ("PCI: rockchip: Provide captured slot power limit and scale")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Shawn Lin <shawn.lin@rock-chips.com>
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Use dev_printk() when possible. This makes messages more consistent with
other device-related messages and, in some cases, adds useful information.
This changes messages like this:
Unable to allocate affinity masks, ignoring
to this:
pci 0000:01:00.0: can't allocate MSI affinity masks for 4 vectors
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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2+ PCI devices fail to be discovered due to each bus having the same PCI
domain. This is because the domain defined in the device tree file is not
being added due to PCI_DOMAIN not being enabled. So, every PCI bus has a
domain of zero. When PCI_DOMAIN is selected by the Kconfig, it picks up
the domain defined in the device tree file and everything works as
expected.
Since both PCIE_IPROC_PLATFORM and PCIE_IPROC_BCMA need PCI_DOMAIN, move
it to PCIE_IPROC so it will be automatically selected for both.
Signed-off-by: Jon Mason <jonmason@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Since commit fcc392d501bd2 ("irqchip/armada-370-xp: Use the generic MSI
infrastructure"), the irqchip driver used on Armada 370, XP, 375, 38x, 39x
for the MPIC interrupt controller has been converted to use the generic MSI
infrastructure.
Since this commit, it is no longer registering an msi_controller structure
with the of_pci_msi_chip_add() function. Therefore, having the PCI driver
used on the same platform calling of_pci_find_msi_chip_by_node() is pretty
useless.
The MSI resolution is now done in the generic interrupt resolution code,
since the MSI controller is an irq domain attached to the interrupt
controller node, which is pointed to by the msi-parent DT property in the
PCIe controller node.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
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The MSI support introduced with the initial Aardvark driver was based
on the msi_controller structure and the of_pci_msi_chip_add() /
of_pci_find_msi_chip_by_node() API, which are being deprecated in
favor of the generic MSI support.
Update the Aardvark driver to use the generic MSI support.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
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msleep() still sleeps 1 jiffy even when told to sleep for zero
milliseconds. That can end up being 1-2 milliseconds or more. In the
cases of d3_delay and d3cold_delay, that unnecessarily increases suspend
and/or resume latencies.
Do not sleep at all for the respective cases if d3_delay is zero or
d3cold_delay is zero.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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pci_msi_shutdown() and pci_msix_shutdown() are used only in
drivers/pci/msi.c, so make them static.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The pci_bus_type .shutdown method, pci_device_shutdown(), is called from
device_shutdown() in the kernel restart and shutdown paths.
Previously, pci_device_shutdown() called pci_msi_shutdown() and
pci_msix_shutdown(). This disables MSI and MSI-X, which causes the device
to fall back to raising interrupts via INTx. But the driver is still bound
to the device, it doesn't know about this change, and it likely doesn't
have an INTx handler, so these INTx interrupts cause "nobody cared"
warnings like this:
irq 16: nobody cared (try booting with the "irqpoll" option)
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.8.2-1.el7_UNSUPPORTED.x86_64 #1
Hardware name: Hewlett-Packard HP Z820 Workstation/158B, BIOS J63 v03.90 06/
...
The MSI disabling code was added by d52877c7b1af ("pci/irq: let
pci_device_shutdown to call pci_msi_shutdown v2") because a driver left MSI
enabled and kdump failed because the kexeced kernel wasn't prepared to
receive the MSI interrupts.
Subsequent commits 1851617cd2da ("PCI/MSI: Disable MSI at enumeration even
if kernel doesn't support MSI") and e80e7edc55ba ("PCI/MSI: Initialize MSI
capability for all architectures") changed the kexeced kernel to disable
all MSIs itself so it no longer depends on the crashed kernel to clean up
after itself.
Stop disabling MSI/MSI-X in pci_device_shutdown(). This resolves the
"nobody cared" unhandled IRQ issue above. It also allows PCI serial
devices, which may rely on the MSI interrupts, to continue outputting
messages during reboot/shutdown.
[bhelgaas: changelog, drop pci_msi_shutdown() and pci_msix_shutdown() calls
altogether]
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=187351
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Alex Williamson <alex.williamson@redhat.com>
CC: David Arcari <darcari@redhat.com>
CC: Myron Stowe <mstowe@redhat.com>
CC: Lukas Wunner <lukas@wunner.de>
CC: Keith Busch <keith.busch@intel.com>
CC: Mika Westerberg <mika.westerberg@linux.intel.com>
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The host bridge memory window resource is inserted into the iomem_resource
tree and cannot be deallocated until the host bridge itself is removed.
Previously, the window was on the stack, which meant the iomem_resource
entry pointed into the stack and was corrupted as soon as the probe
function returned, which caused memory corruption and errors like this:
pcie_iproc_bcma bcma0:8: resource collision: [mem 0x40000000-0x47ffffff] conflicts with PCIe MEM space [mem 0x40000000-0x47ffffff]
Move the memory window resource from the stack into struct iproc_pcie so
its lifetime matches that of the host bridge.
Fixes: c3245a566400 ("PCI: iproc: Request host bridge window resources")
Reported-and-tested-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v4.8+
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We call pcie_aspm_exit_link_state() when we remove a device. If the device
is the last PCIe function to be removed below a bridge and the bridge has
an ASPM link_state struct, we disable ASPM on the link. Disabling ASPM
requires link->downstream (used in pcie_config_aspm_link()).
We previously set link->downstream in pcie_aspm_cap_init(), but only if the
device was not blacklisted. Removing the blacklisted device caused a NULL
pointer dereference in the pcie_aspm_exit_link_state() ->
pcie_config_aspm_link() path:
# echo 1 > /sys/bus/pci/devices/0000\:0b\:00.0/remove
...
BUG: unable to handle kernel NULL pointer dereference at 0000000000000080
IP: pcie_config_aspm_link+0x5d/0x2b0
Call Trace:
pcie_aspm_exit_link_state+0x75/0x130
pci_stop_bus_device+0xa4/0xb0
pci_stop_and_remove_bus_device_locked+0x1a/0x30
remove_store+0x50/0x70
dev_attr_store+0x18/0x30
sysfs_kf_write+0x44/0x60
kernfs_fop_write+0x10e/0x190
__vfs_write+0x28/0x110
? rcu_read_lock_sched_held+0x5d/0x80
? rcu_sync_lockdep_assert+0x2c/0x60
? __sb_start_write+0x173/0x1a0
? vfs_write+0xb3/0x180
vfs_write+0xc4/0x180
SyS_write+0x49/0xa0
do_syscall_64+0xa6/0x1c0
entry_SYSCALL64_slow_path+0x25/0x25
---[ end trace bd187ee0267df5d9 ]---
To avoid this, set link->downstream in alloc_pcie_link_state(), so every
pcie_link_state structure has a valid link->downstream pointer.
[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rajat Jain <rajatja@google.com>
CC: stable@vger.kernel.org
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QLogic ISP2722-based 16/32Gb Fibre Channel to PCIe Adapter has the VPD
access issue too, while read the common pci-sysfs access interface shown as
/sys/devices/pci0000:00/0000:00:03.2/0000:0b:00.0/vpd
with simple 'cat' could cause system hang and panic:
Kernel panic - not syncing: An NMI occurred. Depending on your system the reason for the NMI is logged in any one of the following resources:
1. Integrated Management Log (IML)
2. OA Syslog
3. OA Forward Progress Log
4. iLO Event Log
CPU: 0 PID: 15070 Comm: udevadm Not tainted 4.1.12
Hardware name: HP ProLiant DL380 Gen9/ProLiant DL380 Gen9, BIOS P89 12/27/2015
0000000000000086 000000007f0cdf51 ffff880c4fa05d58 ffffffff817193de
ffffffffa00b42d8 0000000000000075 ffff880c4fa05dd8 ffffffff81714072
0000000000000008 ffff880c4fa05de8 ffff880c4fa05d88 000000007f0cdf51
Call Trace:
<NMI> [<ffffffff817193de>] dump_stack+0x63/0x81
[<ffffffff81714072>] panic+0xd0/0x20e
[<ffffffffa00b390d>] hpwdt_pretimeout+0xdd/0xe0 [hpwdt]
[<ffffffff81021fc9>] ? sched_clock+0x9/0x10
[<ffffffff8101c101>] nmi_handle+0x91/0x170
[<ffffffff8101c10c>] ? nmi_handle+0x9c/0x170
[<ffffffff8101c5fe>] io_check_error+0x1e/0xa0
[<ffffffff8101c719>] default_do_nmi+0x99/0x140
[<ffffffff8101c8b4>] do_nmi+0xf4/0x170
[<ffffffff817232c5>] end_repeat_nmi+0x1a/0x1e
[<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
[<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
[<ffffffff815d724b>] ? pci_conf1_read+0xeb/0x120
<<EOE>> [<ffffffff815db4b3>] raw_pci_read+0x23/0x40
[<ffffffff815db4fc>] pci_read+0x2c/0x30
[<ffffffff8136f612>] pci_user_read_config_word+0x72/0x110
[<ffffffff8136f746>] pci_vpd_pci22_wait+0x96/0x130
[<ffffffff8136ff9b>] pci_vpd_pci22_read+0xdb/0x1a0
[<ffffffff8136ea30>] pci_read_vpd+0x20/0x30
[<ffffffff8137d590>] read_vpd_attr+0x30/0x40
[<ffffffff8128e037>] sysfs_kf_bin_read+0x47/0x70
[<ffffffff8128d24e>] kernfs_fop_read+0xae/0x180
[<ffffffff8120dd97>] __vfs_read+0x37/0x100
[<ffffffff812ba7e4>] ? security_file_permission+0x84/0xa0
[<ffffffff8120e366>] ? rw_verify_area+0x56/0xe0
[<ffffffff8120e476>] vfs_read+0x86/0x140
[<ffffffff8120f3f5>] SyS_read+0x55/0xd0
[<ffffffff81720f2e>] system_call_fastpath+0x12/0x71
Shutting down cpus with NMI
Kernel Offset: disabled
drm_kms_helper: panic occurred, switching back to text console
So blacklist the access to its VPD.
Signed-off-by: Ethan Zhao <ethan.zhao@oracle.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v4.6+
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Even when using the PHY framework, we need the elbi_base. Before this
patch, we didn't initialize elbi_base, which caused NULL pointer
dereferences later.
Fixes: e7cd7ef58e1f ("PCI: exynos: Support the PHY generic framework")
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Microsemi's "Switchtec" line of PCI switch devices is already well
supported by the kernel with standard PCI switch drivers. However, the
Switchtec device advertises a special management endpoint with a separate
PCI function address and class code. This endpoint enables some additional
functionality which includes:
* Packet and Byte Counters
* Switch Firmware Upgrades
* Event and Error logs
* Querying port link status
* Custom user firmware commands
Add a switchtec kernel module which provides PCI driver that exposes a char
device. The char device provides userspace access to this interface
through read, write and (optionally) poll calls.
A userspace tool and library which utilizes this interface is available
at [1]. This tool takes inspiration (and borrows some code) from
nvme-cli [2]. The tool is largely complete at this time but additional
features may be added in the future.
[1] https://github.com/sbates130272/switchtec-user
[2] https://github.com/linux-nvme/nvme-cli
[Dan Carpenter <dan.carpenter@oracle.com>: don't invert error codes]
[Christophe JAILLET <christophe.jaillet@wanadoo.fr>: fix
switchtec_dev_open() error handling]
Tested-by: Krishna Dhulipala <krishnad@fb.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Stephen Bates <stephen.bates@microsemi.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Wei Zhang <wzhang@fb.com>
Reviewed-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
- fix NULL pointer dereferences in many DesignWare-based drivers due to
refactoring error
- fix Altera config write breakage due to my refactoring error
* tag 'pci-v4.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: altera: Fix TLP_CFG_DW0 for TLP write
PCI: dwc: Fix crashes seen due to missing assignments
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Pull block layer fixes from Jens Axboe:
"A collection of fixes for this merge window, either fixes for existing
issues, or parts that were waiting for acks to come in. This pull
request contains:
- Allocation of nvme queues on the right node from Shaohua.
This was ready long before the merge window, but waiting on an ack
from Bjorn on the PCI bit. Now that we have that, the three patches
can go in.
- Two fixes for blk-mq-sched with nvmeof, which uses hctx specific
request allocations. This caused an oops. One part from Sagi, one
part from Omar.
- A loop partition scan deadlock fix from Omar, fixing a regression
in this merge window.
- A three-patch series from Keith, closing up a hole on clearing out
requests on shutdown/resume.
- A stable fix for nbd from Josef, fixing a leak of sockets.
- Two fixes for a regression in this window from Jan, fixing a
problem with one of his earlier patches dealing with queue vs bdi
life times.
- A fix for a regression with virtio-blk, causing an IO stall if
scheduling is used. From me.
- A fix for an io context lock ordering problem. From me"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: Move bdi_unregister() to del_gendisk()
blk-mq: ensure that bd->last is always set correctly
block: don't call ioc_exit_icq() with the queue lock held for blk-mq
block: Initialize bd_bdi on inode initialization
loop: fix LO_FLAGS_PARTSCAN hang
nvme: Complete all stuck requests
blk-mq: Provide freeze queue timeout
blk-mq: Export blk_mq_freeze_queue_wait
nbd: stop leaking sockets
blk-mq: move update of tags->rqs to __blk_mq_alloc_request()
blk-mq: kill blk_mq_set_alloc_data()
blk-mq: make blk_mq_alloc_request_hctx() allocate a scheduler request
blk-mq-sched: Allocate sched reserved tags as specified in the original queue tagset
nvme: allocate nvme_queue in correct node
PCI: add an API to get node from vector
blk-mq: allocate blk_mq_tags and requests in correct node
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Next patch will use the API to get the node from vector for nvme device
Signed-off-by: Shaohua Li <shli@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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<linux/sched.h> into <linux/sched/signal.h>
Fix up affected files that include this signal functionality via sched.h.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull more powerpc updates from Michael Ellerman:
"Highlights include:
- an update of the disassembly code used by xmon to the latest
versions in binutils. We've received permission from all the
authors of the relevant binutils changes to relicense their changes
to the relevant files from GPLv3 to GPLv2, for inclusion in Linux.
Thanks to Peter Bergner for doing the leg work to get permission
from everyone.
- addition of the "architected" Power9 CPU table entry, allowing us
to boot in Power9 architected mode under a hypervisor.
- updates to the Power9 PMU code.
- implementation of clear_bit_unlock_is_negative_byte() to optimise
unlock_page().
- Freescale updates from Scott: "Highlights include 8xx breakpoints
and perf, t1042rdb display support, and board updates."
Thanks to:
Al Viro, Andrew Donnellan, Aneesh Kumar K.V, Balbir Singh, Douglas
Miller, Frédéric Weisbecker, Gavin Shan, Madhavan Srinivasan,
Michael Roth, Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Peter
Bergner, Paul E. McKenney, Rashmica Gupta, Russell Currey, Sahil
Mehta, Stewart Smith"
* tag 'powerpc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (48 commits)
powerpc: Remove leftover cputime_to_nsecs call causing build error
powerpc/mm/hash: Always clear UPRT and Host Radix bits when setting up CPU
powerpc/optprobes: Fix TOC handling in optprobes trampoline
powerpc/pseries: Advertise Hot Plug Event support to firmware
cxl: fix nested locking hang during EEH hotplug
powerpc/xmon: Dump memory in CPU endian format
powerpc/pseries: Revert 'Auto-online hotplugged memory'
powerpc/powernv: Make PCI non-optional
powerpc/64: Implement clear_bit_unlock_is_negative_byte()
powerpc/powernv: Remove unused variable in pnv_pci_sriov_disable()
powerpc/kernel: Remove error message in pcibios_setup_phb_resources()
powerpc/mm: Fix typo in set_pte_at()
pci/hotplug/pnv-php: Disable MSI and PCI device properly
pci/hotplug/pnv-php: Disable surprise hotplug capability on conflicts
pci/hotplug/pnv-php: Remove WARN_ON() in pnv_php_put_slot()
powerpc: Add POWER9 architected mode to cputable
powerpc/perf: use is_kernel_addr macro in perf_get_misc_flags()
powerpc/perf: Avoid FAB_*_MATCH checks for power9
powerpc/perf: Add restrictions to PMC5 in power9 DD1
powerpc/perf: Use Instruction Counter value
...
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eb5767122feb ("PCI: altera: Simplify TLB_CFG_DW0 usage") used
TLP_FMTTYPE_CFGRD* (instead of TLP_FMTTYPE_CFGWR*) for TLP writes, which
causes writing to configuration space to fail. Fix it by using correct
FMTTYPE for write operation.
Fixes: eb5767122feb ("PCI: altera: Simplify TLB_CFG_DW0 usage")
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v4.9+
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Fix typos and add the following to the scripts/spelling.txt:
followings||following
While we are here, add a missing colon in the boilerplate in DT binding
documents. The "you SoC" in allwinner,sunxi-pinctrl.txt was fixed as
well.
I reworded "as the followings:" to "as follows:" for
drivers/usb/gadget/udc/renesas_usb3.c.
Link: http://lkml.kernel.org/r/1481573103-11329-32-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma DMA mapping updates from Doug Ledford:
"Drop IB DMA mapping code and use core DMA code instead.
Bart Van Assche noted that the ib DMA mapping code was significantly
similar enough to the core DMA mapping code that with a few changes it
was possible to remove the IB DMA mapping code entirely and switch the
RDMA stack to use the core DMA mapping code.
This resulted in a nice set of cleanups, but touched the entire tree
and has been kept separate for that reason."
* tag 'for-next-dma_ops' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (37 commits)
IB/rxe, IB/rdmavt: Use dma_virt_ops instead of duplicating it
IB/core: Remove ib_device.dma_device
nvme-rdma: Switch from dma_device to dev.parent
RDS: net: Switch from dma_device to dev.parent
IB/srpt: Modify a debug statement
IB/srp: Switch from dma_device to dev.parent
IB/iser: Switch from dma_device to dev.parent
IB/IPoIB: Switch from dma_device to dev.parent
IB/rxe: Switch from dma_device to dev.parent
IB/vmw_pvrdma: Switch from dma_device to dev.parent
IB/usnic: Switch from dma_device to dev.parent
IB/qib: Switch from dma_device to dev.parent
IB/qedr: Switch from dma_device to dev.parent
IB/ocrdma: Switch from dma_device to dev.parent
IB/nes: Remove a superfluous assignment statement
IB/mthca: Switch from dma_device to dev.parent
IB/mlx5: Switch from dma_device to dev.parent
IB/mlx4: Switch from dma_device to dev.parent
IB/i40iw: Remove a superfluous assignment statement
IB/hns: Switch from dma_device to dev.parent
...
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Fix the following crash, seen in dwc/pci-imx6.
Unable to handle kernel NULL pointer dereference at virtual address 00000070
pgd = c0004000
[00000070] *pgd=00000000
Internal error: Oops: 805 [#1] SMP ARM
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.10.0-09686-g9e31489 #1
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
task: cb850000 task.stack: cb84e000
PC is at imx6_pcie_probe+0x2f4/0x414
...
While at it, fix the same problem in various drivers instead of waiting for
individual crash reports.
The change in the imx6 driver was tested with qemu. The changes in other
drivers are based on code inspection and have been compile tested only.
Fixes: 442ec4c04d12 ("PCI: dwc: all: Split struct pcie_port into host-only and core structures")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org> # designware-plat
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- add ASPM L1 substate support
- enable PCIe Extended Tags when supported
- configure PCIe MPS settings on iProc, Versatile, X-Gene, and Xilinx
- increase VPD access timeout
- add ACS quirks for Intel Union Point, Qualcomm QDF2400 and QDF2432
- use new pci_irq_alloc_vectors() in more drivers
- fix MSI affinity memory leak
- remove unused MSI interfaces and update documentation
- remove unused AER .link_reset() callback
- avoid pci_lock / p->pi_lock deadlock seen with perf
- serialize sysfs enable/disable num_vfs operations
- move DesignWare IP from drivers/pci/host/ to drivers/pci/dwc/ and
refactor so we can support both hosts and endpoints
- add DT ECAM-like support for HiSilicon Hip06/Hip07 controllers
- add Rockchip system power management support
- add Thunder-X cn81xx and cn83xx support
- add Exynos 5440 PCIe PHY support
* tag 'pci-v4.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (93 commits)
PCI: dwc: Remove dependency of designware on CONFIG_PCI
PCI: dwc: Add CONFIG_PCIE_DW_HOST to enable PCI dwc host
PCI: dwc: Split pcie-designware.c into host and core files
PCI: dwc: designware: Fix style errors in pcie-designware.c
PCI: dwc: designware: Parse "num-lanes" property in dw_pcie_setup_rc()
PCI: dwc: all: Split struct pcie_port into host-only and core structures
PCI: dwc: designware: Get device pointer at the start of dw_pcie_host_init()
PCI: dwc: all: Rename cfg_read/cfg_write to read/write
PCI: dwc: all: Use platform_set_drvdata() to save private data
PCI: dwc: designware: Move register defines to designware header file
PCI: dwc: Use PTR_ERR_OR_ZERO to simplify code
PCI: dra7xx: Group PHY API invocations
PCI: dra7xx: Enable MSI and legacy interrupts simultaneously
PCI: dra7xx: Add support to force RC to work in GEN1 mode
PCI: dra7xx: Simplify probe code with devm_gpiod_get_optional()
PCI: Move DesignWare IP support to new drivers/pci/dwc/ directory
PCI: exynos: Support the PHY generic framework
Documentation: binding: Modify the exynos5440 PCIe binding
phy: phy-exynos-pcie: Add support for Exynos PCIe PHY
Documentation: samsung-phy: Add exynos-pcie-phy binding
...
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Pull networking updates from David Miller:
"Highlights:
1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini
Varadhan.
2) Simplify classifier state on sk_buff in order to shrink it a bit.
From Willem de Bruijn.
3) Introduce SIPHASH and it's usage for secure sequence numbers and
syncookies. From Jason A. Donenfeld.
4) Reduce CPU usage for ICMP replies we are going to limit or
suppress, from Jesper Dangaard Brouer.
5) Introduce Shared Memory Communications socket layer, from Ursula
Braun.
6) Add RACK loss detection and allow it to actually trigger fast
recovery instead of just assisting after other algorithms have
triggered it. From Yuchung Cheng.
7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot.
8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert.
9) Export MPLS packet stats via netlink, from Robert Shearman.
10) Significantly improve inet port bind conflict handling, especially
when an application is restarted and changes it's setting of
reuseport. From Josef Bacik.
11) Implement TX batching in vhost_net, from Jason Wang.
12) Extend the dummy device so that VF (virtual function) features,
such as configuration, can be more easily tested. From Phil
Sutter.
13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric
Dumazet.
14) Add new bpf MAP, implementing a longest prefix match trie. From
Daniel Mack.
15) Packet sample offloading support in mlxsw driver, from Yotam Gigi.
16) Add new aquantia driver, from David VomLehn.
17) Add bpf tracepoints, from Daniel Borkmann.
18) Add support for port mirroring to b53 and bcm_sf2 drivers, from
Florian Fainelli.
19) Remove custom busy polling in many drivers, it is done in the core
networking since 4.5 times. From Eric Dumazet.
20) Support XDP adjust_head in virtio_net, from John Fastabend.
21) Fix several major holes in neighbour entry confirmation, from
Julian Anastasov.
22) Add XDP support to bnxt_en driver, from Michael Chan.
23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan.
24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi.
25) Support GRO in IPSEC protocols, from Steffen Klassert"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits)
Revert "ath10k: Search SMBIOS for OEM board file extension"
net: socket: fix recvmmsg not returning error from sock_error
bnxt_en: use eth_hw_addr_random()
bpf: fix unlocking of jited image when module ronx not set
arch: add ARCH_HAS_SET_MEMORY config
net: napi_watchdog() can use napi_schedule_irqoff()
tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"
net/hsr: use eth_hw_addr_random()
net: mvpp2: enable building on 64-bit platforms
net: mvpp2: switch to build_skb() in the RX path
net: mvpp2: simplify MVPP2_PRS_RI_* definitions
net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT
net: mvpp2: remove unused register definitions
net: mvpp2: simplify mvpp2_bm_bufs_add()
net: mvpp2: drop useless fields in mvpp2_bm_pool and related code
net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue'
net: mvpp2: release reference to txq_cpu[] entry after unmapping
net: mvpp2: handle too large value in mvpp2_rx_time_coal_set()
net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set()
net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set
...
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* pci/virtualization:
PCI: Add ACS quirk for Qualcomm QDF2400 and QDF2432
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* pci/msi:
PCI/MSI: Fix msi_desc->affinity memory leak when freeing MSI IRQs
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* pci/enumeration:
PCI: Sort the list of devices with D3 delay quirk by ID
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* pci/host-xilinx:
PCI: xilinx-nwl: Remove mask for messages not supported by AXI
PCI: xilinx: Configure PCIe MPS settings
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* pci/host-xgene:
PCI: xgene: Configure PCIe MPS settings
PCI: xgene: Fix double free on init error
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* pci/host-versatile:
PCI: versatile: Configure PCIe MPS settings
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* pci/host-thunder:
PCI: thunder-pem: Add support for cn81xx and cn83xx SoCs
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* pci/host-rockchip:
PCI: rockchip: Set vendor ID from local core config space
PCI: rockchip: Fix rockchip_pcie_probe() error path to free resource list
PCI: rockchip: Mark PM functions as __maybe_unused
PCI: rockchip: Use readl_poll_timeout() instead of open-coding it
PCI: rockchip: Disable RC's ASPM L0s based on DT "aspm-no-l0s"
PCI: rockchip: Add system PM support
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* pci/host-rcar:
PCI: rcar: Use of_device_get_match_data() to simplify probe
PCI: rcar: Add compatible string for r8a7796
PCI: rcar: Return -ENODEV from host bridge probe when no card present
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* pci/host-mvebu:
PCI: mvebu: Change delay after reset to the PCIe spec mandated 100ms
PCI: mvebu: Handle changes to the bridge windows while enabled
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* pci/host-layerscape:
PCI: layerscape: Use of_device_get_match_data() to simplify probe
Conflicts:
drivers/pci/dwc/pci-layerscape.c
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* pci/host-iproc:
PCI: Add Broadcom Northstar2 PAXC quirk for device class and MPSS
PCI: iproc: Configure PCIe MPS settings
PCI: iproc: Use of_device_get_match_data() to simplify probe
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* pci/host-imx6:
PCI: imx6: Fix a typo in error message
PCI: imx6: Remove LTSSM disable workaround
PCI: imx6: Remove redundant "Link never came up" message
Conflicts:
drivers/pci/dwc/pci-imx6.c
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* pci/host-hv:
PCI: hv: Use device serial number as PCI domain
PCI: hv: Fix wslot_to_devfn() to fix warnings on device removal
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* pci/host-hisi:
PCI: generic: Call pci_fixup_irqs() only on ARM
PCI: Disable MSI for HiSilicon Hip06/Hip07 Root Ports
PCI: hisi: Rename config space accessors to remove "acpi"
PCI: hisi: Add DT almost-ECAM support for Hip06/Hip07 host controllers
PCI: hisi: Use of_device_get_match_data() to simplify probe
Conflicts:
drivers/pci/dwc/pcie-hisi.c
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* pci/host-exynos:
PCI: exynos: Support the PHY generic framework
Documentation: binding: Modify the exynos5440 PCIe binding
phy: phy-exynos-pcie: Add support for Exynos PCIe PHY
Documentation: samsung-phy: Add exynos-pcie-phy binding
PCI: exynos: Refactor to make it easier to support other SoCs
PCI: exynos: Remove duplicated code
PCI: exynos: Use the bitops BIT() macro to build bitmasks
PCI: exynos: Remove unnecessary local variables
PCI: exynos: Replace the *_blk/*_phy/*_elb accessors
PCI: exynos: Rename all pointer names from "exynos_pcie" to "ep"
Conflicts:
drivers/pci/dwc/pci-exynos.c
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* pci/host-altera:
PCI: altera: Extract TLP completion status correctly
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* pci/host-designware:
PCI: dwc: Remove dependency of designware on CONFIG_PCI
PCI: dwc: Add CONFIG_PCIE_DW_HOST to enable PCI dwc host
PCI: dwc: Split pcie-designware.c into host and core files
PCI: dwc: designware: Fix style errors in pcie-designware.c
PCI: dwc: designware: Parse "num-lanes" property in dw_pcie_setup_rc()
PCI: dwc: all: Split struct pcie_port into host-only and core structures
PCI: dwc: designware: Get device pointer at the start of dw_pcie_host_init()
PCI: dwc: all: Rename cfg_read/cfg_write to read/write
PCI: dwc: all: Use platform_set_drvdata() to save private data
PCI: dwc: designware: Move register defines to designware header file
PCI: dwc: Use PTR_ERR_OR_ZERO to simplify code
PCI: dra7xx: Group PHY API invocations
PCI: dra7xx: Enable MSI and legacy interrupts simultaneously
PCI: dra7xx: Add support to force RC to work in GEN1 mode
PCI: dra7xx: Simplify probe code with devm_gpiod_get_optional()
PCI: Move DesignWare IP support to new drivers/pci/dwc/ directory
PCI: designware: Check for iATU unroll only on platforms that use ATU
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CONFIG_PCI is used to enable host mode PCI. In preparation for adding
endpoint mode support to designware driver, remove the dependency of
designware on CONFIG_PCI and make only the host-specific part depend on
CONFIG_PCI.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Now that PCI designware host has a separate file, add a new PCIE_DW_HOST
config symbol to select the host-only driver. This will enable to
independently select host support and endpoint support (when it's added).
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Split pcie-designware.c into pcie-designware-host.c that contains the host
specific parts of the driver and pcie-designware.c that contains the parts
used by both host driver and endpoint driver.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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No functional change. Fix all checkpatch warnings and check errors in
pcie-designware.c
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-By: Joao Pinto <jpinto@synopsys.com>
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The "num-lanes" DT property is parsed in dw_pcie_host_init(). However
num-lanes is applicable to both root complex mode and endpoint mode. As a
first step, move the parsing of this property outside dw_pcie_host_init().
This is in preparation for splitting pcie-designware.c to pcie-designware.c
and pcie-designware-host.c
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Keep only the host-specific members in struct pcie_port and move the common
members (i.e common to both host and endpoint) to struct dw_pcie. This is
in preparation for adding endpoint mode support to designware driver.
While at that also fix checkpatch warnings.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Jingoo Han <jingoohan1@gmail.com>
CC: Richard Zhu <hongxing.zhu@nxp.com>
CC: Lucas Stach <l.stach@pengutronix.de>
CC: Murali Karicheri <m-karicheri2@ti.com>
CC: Minghuan Lian <minghuan.Lian@freescale.com>
CC: Mingkai Hu <mingkai.hu@freescale.com>
CC: Roy Zang <tie-fei.zang@freescale.com>
CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
CC: Niklas Cassel <niklas.cassel@axis.com>
CC: Jesper Nilsson <jesper.nilsson@axis.com>
CC: Joao Pinto <Joao.Pinto@synopsys.com>
CC: Zhou Wang <wangzhou1@hisilicon.com>
CC: Gabriele Paoloni <gabriele.paoloni@huawei.com>
CC: Stanimir Varbanov <svarbanov@mm-sol.com>
CC: Pratyush Anand <pratyush.anand@gmail.com>
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No functional change. Get device pointer at the beginning of
dw_pcie_host_init() instead of getting it all over dw_pcie_host_init().
This is in preparation for splitting struct pcie_port into host and core
structures (once split pcie_port will not have device pointer).
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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No functional change. dw_pcie_cfg_read()/dw_pcie_cfg_write() doesn't do
anything specific to access configuration space. It can be just renamed to
dw_pcie_read()/dw_pcie_write() and used to read/write data to dbi space.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-By: Joao Pinto <jpinto@synopsys.com>
CC: Jingoo Han <jingoohan1@gmail.com>
CC: Murali Karicheri <m-karicheri2@ti.com>
CC: Stanimir Varbanov <svarbanov@mm-sol.com>
CC: Pratyush Anand <pratyush.anand@gmail.com>
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